What is an adaptive iq test?
An adaptive IQ test is one that adjusts the difficulty level (
item difficulty) of the questions based on the test taker's performance. The brght IQ test is an example of an adaptive test. Each test taker starts with a relatively easy question and as they answer correctly, the next question becomes slightly more difficult. If the test taker answers incorrectly, the next question will be easier. This method of question selection ensures that each test taker is answering questions at their own appropriate difficulty level.
For every question we analyze the time it takes the average user to get tot the correct answer (
Response Time Analysis). This information allows us to select a set of questions for each individual test taker that is challenging but possible to answer within the given time.
The main advantages of adaptive tests include:
- Each individual test taker is presented with questions that are challenging but still motivating. After the first few questions, test takers will not have to answer questions that are either too easy or impossible for them to solve.
- Studies have shown that adaptive question selection can reduce test time by 50% or more. By adapting to the level of the individual test taker, the question selection system will select questions that provide the most information (Point of Maximum Information) about the test taker's IQ. To learn more about this principle and how it is used in the brght IQ test, read more about Item discrimination and the point of maximum information of questions.
- No test is ever the same. The brght IQ test's question database consists of more than 5,000 questions, so test takers can take the test multiple times without ever seeing the same question.